Working with computational journalist Nick Diakopoulos, IEEE Spectrum has weighted and combined 12 metrics from 10 sources (including IEEE Xplore, Google, and GitHub) to rank the most popular programming languages. If you don’t agree with our weighting, want to see more languages, or are interested in what’s dominant in a specific subsector, such as mobile, go to our online interactive version. There you can adjust the weight of each metric and create your own custom ranking.